Suction was used in the neograft system to try and simplify the extraction process and combine the steps of punching and excising out the grafts. The graft would travel through a tube to be stored in a compartment. The problem is that the grafts desiccated and died. Suction has not proven to be the good historically with fue.
I’ve heard zarev uses his own device that I assume is an off the shelf unit with some add-ons. He’s seemed to figure something out that others haven’t.
but with all that being said, I’d choose skill of a surgeon over the tools any day.